一种基于DDS+PLL的Chirp-UWB信号产生方案

Method of Chirp-UWB Signal Generation Based on DDS and PLL

由于超宽带信号的带宽很宽,传统的信号产生办法已不能直接应用于超宽带通信。为此,提出一种基于DDS+PLL的Chirp-UWB信号产生方案,该方法联合使用了DDS和PLL两种信号产生技术,优势互补。通过ADS结合Matlab对系统的模型建立和性能分析证明,该方案输出信号性能优良,完全能满足设计要求,并已成功应用于某超宽带通信系统。

Because of wide bandwidth of UWB signal, the previous method of signal generation can not be used in UWB communication system. A signal generation of Chirp- UWB based on DDS＋ PLL is introduced. This method combines the advantages of DDS and PLL. Modeling and simulating by ADS and Matlab prove this method can output high performance signal, and it satisfies demand of the design well. This scheme has been used in a UWB communication system well.